Multi-layer optical network management graphical user interface and visualizations

ABSTRACT

A network management system includes a network interface communicatively coupled to one or more network elements in a network for exchanging Operations, Administration, Maintenance, and Provisioning (OAM&amp;P) data; a processor communicatively coupled to the network interface; and memory storing instructions that, when executed, cause the processor to obtain the OAM&amp;P data from the network, provide a Graphical User Interface (GUI) based on the network from the OAM&amp;P data, wherein the GUI includes a network map which provides a topological view and a subway view which provides a detailed device-level view which is more granular than the network map and illustrates individual components at each site, receive a selection from a user of a service in the network, and update the GUI to highlight the service in the network map and illustrate the associated sites in the subway view.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application/patent claims priority to U.S. ProvisionalPatent Application No. 62/526,127, filed Jun. 28, 2017, and entitled“MULTI-LAYER OPTICAL NETWORK MANAGEMENT GRAPHICAL USER INTERFACE ANDVISUALIZATIONS,” the contents of which are incorporated by referenceherein.

FIELD OF THE DISCLOSURE

The present disclosure generally relates to network management systemsand methods. More particularly, the present disclosure relates to amulti-layer optical communications network management Graphical UserInterface (GUI) and communications network visualizations.

BACKGROUND OF THE DISCLOSURE

Network management is key to operating multi-layer communicationsnetworks to perform various functions such as fault analysis,performance management, service provisioning, network deviceprovisioning, maintaining the Quality of Service (QoS), Operations,Administration, Maintenance, and Provisioning (OAM&P), and the like.Generally, network management solutions are provided through NetworkManagement Systems (NMS). Networks continue to evolve to supportmultiple layers (e.g., optical, Time Division Multiplexing (TDM),packet, and the like) in the same operational network including the samenetwork elements along with advanced features. Thus, it is desired fornetwork management solutions to address this evolution.

In a multi-layer network, a service object instance is realized throughone or more nodes and associated cards/components or other devices.Conventional network management approaches do not visualize amulti-layer service object instance in a combined nodal andcard/component/device view. In addition, the conventional networkmanagement approaches do not isolate the physical/topology view todisplay only the relevant nodes (network elements) that are involved ina service object instance. Rather, they tend to show the entire network(all network elements and links and sometimes include geographical,physical, and topographical attributes) and then overlay (or trace) theservice instance across the entire network view, highlighting thenetwork elements and links involved. Access to the card/component/deviceview of the service combined with the overall network view is notconventionally available; rather, any such view is typically accessedvia another window or screen.

Network management systems use objects to model, manage, and displaynetwork data. With respect to associating correlated data and otherobjects to a primary object instance of interest, there are noconventional approaches that provide this type of functionality fromwithin a service object instance detail GUI of a network managementsystem. For example, if an operator needs to know the associatedservices and customers that are currently related to a primary serviceobject instance they are interested in, the operator needs tocross-reference other windows/applications within the NMS or even resortto checking other systems, e.g., Operational Support Systems(OSS)/Business Support System (BSS) applications, trouble-ticketsystems, and/or look it up manually in a binder of printed relatedobjects, which are separate from the NMS where the primary serviceobject instance was found in the first place.

There are various shortcomings in showing the topology/connectivity of aservice object instance in conventional systems, e.g., which show ittraced (overlaid) across the entire network on a geographical/physicalmap.

First, since the service object instance connectivity is traced across ageographical/physical map of the entire network, these systems are notable to display the entire service/circuit in one screen/window,especially if the service instance is physically long (e.g., from NewYork to St. Louis). This results in poor user performance/experience asthe operator may have to physically scroll or pan the view window leftto right or top to bottom to actually see the entire end-to-end serviceinstance.

Second, only being able to view the nodes/network elements and linksthat support the service and not being able to deconstruct the view intoevery individual card/component in a line view, results in diminishedend-user functionality.

Third, not being able to expand the line view and show supporting lowerlayer bearer services involved in the primary service object instance,e.g., viewing a Layer 2 Ethernet service instance and showing theunderlying Layer 0 optical line that rides across from end-to-end, alsoresults in diminished functionality.

Fourth, by showing the entire network (i.e., all nodes and links) andmost often many physical, geographical, and topographic map details(e.g., rivers, lakes, roads, borders, elevations, structures, etc.) addscomplexity and visual noise when trying to isolate only the serviceobject instance and how it is connected from a technical/deploymentpoint-of-view.

Further, there are various shortcomings with not associating correlateddata and related object instances to the primary object instance ofinterest in the same screen/window/application. This can lead to poorexperience for the operator as they have to manually cross-referenceother systems and printed material to get all the data needed to performgiven assurance, provisioning, or maintenance tasks on the selectedservice object instance. The manual lookup and correlation is complex,time-consuming, and tedious and can lead to increased risk of end-userhuman error. In particular, operator response time to network events canbe impacted.

Additionally, optical networks are evolving to support more complexoperational schemes with flexible grid optical spectrum, differentmodulation formats, Reconfigurable Optical Add/Drop Multiplexers (ROADM)leading to disjoint A-Z paths of different portions of the spectrum,etc. These next-generation optical networks require additionalfunctionality in the network management systems to support powerreadings, spectral analysis, spectral allocation, and the like.

For a power readings graph, conventional approaches display powerreadings across a path from equipment of one or more vendors. With theintroduction of a power graph in a Software Defined Networking (SDN)application, there is an ability to display power values in the contextof all equipment in the service path, not just the power reportingequipment and in context of the last day's minimum and maximummeasurements to help highlight transient dips in power that otherwiserecovered. This enhances the understanding and troubleshooting of powerbehaviors. However, this does not permit in-context navigation tohistorical readings to assist in more advanced troubleshootingactivities.

For a spectral analysis graph, separate hardware-based Optical SpectrumAnalyzers (OSA) have existed for years, i.e., external equipment. Nextgeneration optical modems can support a built-in software-based spectrumanalyzer, i.e., in-line and in-service. There are no conventional NMSsoftware-based spectrum analyzers that provide the frequency/powerreadings at the same time as overlaying such information onto theused/available/planned spectrum.

For a spectral allocation graph, conventional approaches utilizepath-based spectral allocation visualization through offline networkplanning tools. This visualization is not available for a managednetwork, nor to assist in visualizing/adjusting spectral assignmentwhile provisioning/planning new flexible grid channels on a live,managed network.

Accordingly, there is a need for a multi-layer optical communicationsnetwork management Graphical User Interface (GUI) and visualizationsaddressing the aforementioned limitations.

BRIEF SUMMARY OF THE DISCLOSURE

In an embodiment, a network management system includes a networkinterface communicatively coupled to one or more network elements in anetwork for exchanging Operations, Administration, Maintenance, andProvisioning (OAM&P) data; a processor communicatively coupled to thenetwork interface; and memory storing instructions that, when executed,cause the processor to obtain the OAM&P data from the network, provide aGraphical User Interface (GUI) based on the network from the OAM&P data,wherein the GUI includes a network map which provides a topological viewand a subway view which provides a detailed device-level view which ismore granular than the network map and illustrates individual componentsat each site, receive a selection from a user of a service in thenetwork, and update the GUI to highlight the service in the network mapand illustrate the associated sites in the subway view. The service cantraverse a plurality of sites in the network such that all of the sitescannot be displayed in the subway view, wherein the GUI can furtherinclude a visual scrollbar which visualizes the service in a miniatureformat for the subway view with a portion shown in the subway viewhighlighted, and wherein the memory storing instructions that, whenexecuted, can further cause the processor to update the subway viewbased on input from the user through the visual scrollbar. The memorystoring instructions that, when executed, can further cause theprocessor to highlight a portion of the network in the topological viewwhich is currently displayed in the subway view.

The individual components in the subway view can include any of amultiplexer, an optical transceiver, an optical switch, a multiplexer, ademultiplexer, a Wavelength Selective Switch (WSS), an amplifier, anattenuator, a dispersion compensation module, a C/L band coupler, a TimeDivision Multiplexing (TDM) switch, and a packet switch. The memorystoring instructions that, when executed, can further cause theprocessor t0 receive an input from the user from a selection in the GUI,and present correlated objects and data items based on the selection.The memory storing instructions that, when executed, can further causethe processor to receive an input from the user selecting a power graph,and present an optical power readings graph in place of the network map,wherein the optical power readings graph illustrates power readings inboth directions along the subway view and has an x-axis of optical powerand a y-axis of each of the individual components in the subway viewthat measure optical power.

The memory storing instructions that, when executed, can further causethe processor to receive an input from the user selecting a power graph,and present an optical power readings graph in place of the network map,wherein the optical power readings graph illustrates power readings inboth directions along the subway view and has an x-axis of optical powerand a y-axis of each of the individual components in the subway viewthat measure optical power. The memory storing instructions that, whenexecuted, can further cause the processor to receive an input from theuser selecting a point in the subway view for viewing an opticalspectral analysis graph, and present an optical power readings graph inplace of the network map, wherein the optical spectral analysis graphdisplays power on an x-axis and spectrum on a y-axis. The memory storinginstructions that, when executed, can further cause the processor toreceive an input from the user selecting spectral use, and present anoptical spectral allocation graph in place of the network map, whereinthe optical spectral allocation graph displays spectrum on an x-axis andusage of the spectrum on a y-axis across the subway view.

In another embodiment, a network management method includes, in a serverincluding a network interface communicatively coupled to one or morenetwork elements in a network for exchanging Operations, Administration,Maintenance, and Provisioning (OAM&P) data, obtaining the OAM&P datafrom the network; providing a Graphical User Interface (GUI) based onthe network from the OAM&P data, wherein the GUI includes a network mapwhich provides a topological view and a subway view which provides adetailed device-level view which is more granular than the network mapand illustrates individual components at each site; receiving aselection from a user of a service in the network; and updating the GUIto highlight the service in the network map and illustrate theassociated sites in the subway view.

In a further embodiment, a non-transitory computer-readable mediumincluding instructions that, when executed, cause a processor to performsteps of obtaining Operations, Administration, Maintenance, andProvisioning (OAM&P) data from the network via a network interfacecommunicatively coupled to the processor and to one or more networkelements; providing a Graphical User Interface (GUI) based on thenetwork from the OAM&P data, wherein the GUI includes a network mapwhich provides a topological view and a subway view which provides adetailed device-level view which is more granular than the network mapand illustrates individual components at each site; receiving aselection from a user of a service in the network; and updating the GUIto highlight the service in the network map and illustrate theassociated sites in the subway view.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure is illustrated and described herein withreference to the various drawings, in which like reference numbers areused to denote like system components/method steps, as appropriate, andin which:

FIG. 1 is a network diagram of an example network with fiveinterconnected sites.

FIG. 2 is a network diagram of another optical network illustratingadditional details of a control plane, photonic control, and an SDNcontroller.

FIG. 3 is a block diagram of a server 200 which may be used to implementa management system, the SDN controller, etc.

FIG. 4 is a screenshot of a subway map and line service view.

FIG. 5 is a screenshot of correlated objects and data items.

FIG. 6 is another screenshot of the subway map and line service view.

FIG. 7 is yet another screenshot of the subway map and line serviceview.

FIG. 8 is yet another screenshot of the subway map and line serviceview.

FIG. 9 is yet another screenshot of the subway map and line serviceview.

FIG. 10 is yet another screenshot of the subway map and line serviceview.

FIG. 11 is a logical diagram of a navigation model for correlatedobjects and data items.

FIG. 12 is a diagram of a proposed navigation model in major functionalareas for the correlated objects and data items.

FIG. 13 is a screenshot of correlated objects and data items.

FIG. 14 is another screenshot of the correlated objects and data items.

FIG. 15 is a screenshot of the correlated objects and data items withthe subway map and line service view.

FIG. 16 is yet another screenshot of the correlated objects and dataitems.

FIG. 17 is yet another screenshot of the correlated objects and dataitems.

FIG. 18 is yet another screenshot of the correlated objects and dataitems.

FIG. 19 is yet another screenshot of the correlated objects and dataitems.

FIG. 20 is a screenshot of a combination of the subway map and lineservices view with the correlated objects and data items.

FIG. 21 is a screenshot of an optical power readings graph.

FIG. 22 is a screenshot of an optical spectral analysis graph.

FIG. 23 is a screenshot of an optical spectral allocation graph.

FIG. 24 is a screenshot of an optical power view.

FIG. 25 is a screenshot showing additional details of the optical powerview in FIG. 24.

FIG. 26 is a screenshot of the optical power readings graph.

FIG. 27 is another screenshot of the optical power readings graph.

FIG. 28 is yet another screenshot of the optical power readings graph.

FIG. 29 is yet another screenshot of the optical power readings graph.

FIGS. 30-32 are example screenshots of the optical power readings graph.

FIG. 33 is a screenshot of the optical power readings graph with thesubway map view.

FIG. 34 is a screenshot of an optical spectral analysis graph.

FIG. 35 is another screenshot of an optical spectral analysis graph.

FIG. 36 is yet another screenshot of an optical spectral analysis graph.

FIG. 37 is yet another screenshot of an optical spectral analysis graph.

FIGS. 38-41 are example screenshots of the optical spectral analysisgraph.

FIG. 42 is a screenshot of an optical spectral allocation graph.

FIG. 43 is another screenshot of an optical spectral allocation graph.

FIG. 44 is yet another screenshot of an optical spectral allocationgraph.

FIG. 45 is a screenshot of details panels associated with the opticalspectral allocation graph.

FIG. 46 is a screenshot of selection behavior associated with theoptical spectral allocation graph.

FIGS. 47 and 48 are example screenshots of the optical spectralallocation graph.

FIG. 49 is a screenshot of a subway map and line service view withhighlights in the map to indicate what portion of a path is displayed inthe subway map.

FIG. 50 is a diagram of example service structures.

FIG. 51 is a screenshot of selecting an end to end service path.

FIG. 52 is a screenshot of an example service.

FIG. 53 is a screenshot of another example service.

FIG. 54 is a screenshot of another subway map and line service view.

DETAILED DESCRIPTION OF THE DISCLOSURE

In various embodiments, the present disclosure relates to multi-layeroptical network management Graphical User Interface (GUI) andvisualizations. In particular, the network management GUI andvisualizations include a subway and line service view, correlatedobjects and data items, a power readings graph, a spectral analysisgraph, a spectral allocation graph, and the like, each through the GUIand visualizations.

Subway Map and Correlated Objects

Variously, specific details, attributes, particulars, etc., of aspecific managed object instance, are viewed in an object details pagevia the GUI and visualizations. An object details page provides allrelevant data about the managed object instance in a full page of screenreal estate. It helps users understand the object, troubleshoot it,perform actions, edit and check out related data/information to theobject. When a user chooses to drill into a specific object instancefrom a list of instances, this focuses on that instance forobject-specific work. Capturing an object instance's details in aseparate page (that can be detached from the original list) allows useof multiple screens or browser tabs, keeping this information separatefrom other tasks to be performed. The details of an End-to-End Serviceobject instance are presented to a user with a “subway map and lineservice view” (primary tab) and correlated objects and data items (oneor more tabs) accessible via sub-tabs on the object details page.

The subway map and line service view is used to view connection-typeobjects in the network, such as services, Labeled Switched Path (LSP)tunnels, G.8032 rings, photonic channels (i.e., wavelengths), and links.This view is (named after) analogous to a real-world subway map and linedepictions, which are typically schematic diagrams oftopological/physical maps that illustrate routes and stations to assistpassengers plan and navigate their way around the entire subway network.Unlike actual maps (e.g., geographical, physical, road, topographical orthematic maps) subway maps are typically not geographically accurate orprecise as they tend to represent links/tracks/trains between stationswith straight lines that are not proportionally scaled to distance inorder to clearly represent all stops/links in the system in a fixed,finite space.

Similarly, when looking at a connection in a communications network,understanding the topology and connectivity between network elements,the connection's current route and possible alternative routes in thenetwork are typically more important to the task of understanding andtroubleshooting the connection than its actual physical, political, ortopographical geography. The subway map view is intended to offer acomprehensive view of the overall communications network employed inproviding a connection. To achieve this, it displays only the networkelements and links that form the current route, and also those that arepart of defined other paths for the connection (e.g. protection,restoration, backup, home paths, Designated Transit List (DTL) sets,etc.). The subway line view is driven from the subway map view anddepicts the cards/components/devices of the selected route and is usefulin and showing any supporting lower layer bearer services/infrastructureinvolved in (associated with) the primary service object instance.

The correlated objects and data items are used to present importantrelated data in the context of the selected (or primary) objectinstance. These “related/associated” tabs are provided in addition tothe expected or intrinsic data tabs typically associated with theprimary object instance details, e.g., attributes, parameters, settings,physical and thematic views, etc. These “related/associated” tabsprovide additional correlations between the selected object (in view)and other related items in the system to support different user tasks.For example, when viewing a service instance, related information mayinclude alarms (current as well as historical, which can also bereferred to as active as well as cleared) associated with that serviceobject instance; other service instances (secondary objects) that dependon it (e.g., higher-layer services), other services/infrastructureinstances that it depends on (e.g., lower-layer or bearer services),etc. Generally speaking, these related/associated tabs could containadditional operationally useful and relevant “drill-across” dataassociated with the selected (primary) object instance that can bequeried or correlated in real-time from data stored in the managementsystem's managed resources and services database.

These related info tabs can be visible from the object details view. Tohelp a user assess the magnitude of the related/associated itemscontained in each “correlated” tab, the numeric count of the relateddata objects contained in the specific tab can be provided. For example,“Alarms (7)” means the tab contains 7 associated alarms to the primaryobject instance being viewed.

The subway map and line service views enable a network operator to viewany multi-layer service from end-to-end for troubleshooting,maintenance, and assurance tasks from a network perspective (networkelements and links) as well as an individual line/component perspective,across each layer that it traverses. That is, it provides a combinednodal (NE), and component (cards and ports) view of a service objectinstance in one screen and/or minimal display footprint. In essence, itis an electronic way of depicting a circuit/multi-layer service instancewhich, conventionally, service provider operators typically draw out byhand on paper in order to troubleshoot an assurance, provisioning ormaintenance issue.

The correlated objects and data items provide an object instance view tofacilitate accessing related objects and correlated data of an alreadyselected service/resource object instance for an operator so that theuser is able to quickly gather and view all relevant data about theprimary object instance without having to open up multiple lists, objectdetails, other windows/screens, and/or applications. It is a combinedview for letting a user traverse all relevant information associated orcorrelated with an object instance from multiple facets and dimensions.

For depicting the topology of a service object instance, the presentdisclosure addresses or overcomes the shortcomings described above bydisplaying a map (node/network element view) and card/component (lineview) of only the network elements and links that form the current route(and the available backup) as deployed in a manner that ispseudo-physical/geographic (i.e., inter-node distances are not precise,and the service instance path is a best fit straight lineapproximation—not actual geographical route). The GUI is typically ableto display the entire service/circuit in the node/network element viewin one screen with only minimal scrolling if any. The individualcards/components are displayed in the line view (which may need toscroll) but the entire line view is also miniaturized (and summarized)in a horizontal visual scrollbar (an end-to-end card view of the entireservice/circuit/line, in miniature, that is incorporated into the scrollbar).

The horizontal visual scroll bar allows the entire service/circuit to bevisible. In addition, simple state and fault information can bedisplayed on the scroll bar so that the operator can easily identifywhich part of the service/circuit/line needs attention. The line view isexpandable so that underlying lower layer services, routes, andconnections can be displayed which enables and facilitates a drill-down,progressive (disclosure) exposure of functionality. Only theservice/circuit object instance (i.e., only the nodes/network elementsand links associated with it) is shown in the map/line view whichreduces visual complexity since extraneous physical data, NEs, and linksthat are not relevant to the instance are not shown.

By providing system generated correlated data and related objectinstances to the primary object instance of interest in the samescreen/window/application, the present disclosure improves functionalityand performance significantly and improves accuracy. The operator canaccess related information easily and quickly in the same window withouthaving to cross-reference other systems or printed material and thusperform troubleshooting, maintenance, provisioning, etc. tasks on theprimary service object instance much faster. The proposed solutionimproves the accuracy of the related data and reduces the risk ofend-user human lookup errors as the correlated data/related objects aresystem driven.

Variously, the GUI and visualizations are implemented through one ormore servers and optionally through one or more processing devicescommunicatively coupled to the servers. For example, the subway map andline service view can be implemented through a Software DefinedNetworking (SDN) controller or application, an orchestration system,etc. The implementations can include Application Programming Interfaces(APIs), REpresentational State Transfer (REST) interfaces,microservices, etc. These implementations can include a)service-to-alarm correlation, b) service-to-supporting servicecorrelation and stitching, c) bearer service-to-upper layer muxedservices correlation, and/or d) service-topology hop-by-hop routing andassociated port inventory.

Advantageously, the subway map and line service view is utilized byservice providers, carriers, enterprise operators, etc. for multi-layerservice management, physical circuit depiction, alarm-to-service andservice-to-alarm correlation over time, etc. The subway map and lineservice view better equip customers to manage multi-layer communicationsnetworks with respect to troubleshooting, diagnostics, re-routing,service assurance, service maintenance, etc.

Power Readings Graph, Spectral Analysis Graph, and Spectral AllocationGraph

Again, specific details, attributes, particulars, etc., of a specificmanaged object instance, are viewed in an object details page in the GUIand visualizations. This page provides all relevant data about theselected object instance in a full GUI screen real estate. It helpsusers understand the object instance, troubleshoot, perform actions,edit and check out related data/information to the object. When thespecific object instance selected is an optical/photonic service or linksome very specific optical sub-views, and visualization graphs areprovided from the main view canvas/tab to facilitate performancemanagement and diagnostic tasks.

In addition to the subway map and line service view and the correlatedobjects and data item views, the GUI and visualizations can includespecific views related to the optical or photonic layer including apower readings graph, a spectral analysis graph, and a spectralallocation graph.

The power readings graph displays power measurements in each datatransport direction independently, e.g., including the last day'sminimum and maximum values, for any photonic service. The power readingsgraph includes the following features:

a. A power-type selector is provided which easily lets a user display“Total Power” or “Per Channel Power,” or “OSC Power” (Optical ServiceChannel).

b. The X-axis of the graph displays the cards along the path that map tothe data points of the power readings in the graph above in the maincanvas.

c. A Data Panel that displays the specific data related to a selectionfrom the graph canvas. If nothing is selected on the graph canvas, thepanel displays the list of all anomalies detected by the system alongthe path's graph.

d. Historical power measurements are accessible for a given measurementthat the user wants to investigate further.

e. A horizontal visual scrollbar: an end-to-end card view of the entirephotonic path (in miniature) that is incorporated into the horizontalscrollbar.

The Spectral Analysis Graph for an optical link displays a real-timeline graph of Spectral Density (SD) power for all frequency data-pointsand per channel power for each Subnetwork Connection (SNC) (an opticalSNC can be referred to as a Network Media Channel (NMC)), for example,placed at the center frequency for the associated SNC/NMC, in aflex-grid enabled optical network. By default, both the Tx and Rxdatasets are overlaid on each graph. Users can selectively turn each offto focus on one dataset at a time via a disclosure tab. Note, removingTx/Rx from view would also remove the associated per channel data-pointsfrom the view. The spectral analysis graph can include the followingfeatures:

a. Spectral analysis graphs that display power per frequency line graphsoverlaid with the spectral allocation of the span in terms ofused/available/planned spectrum blocks. Also, shows per channel power.There can be one graph per photonic direction.

b. Selectable SNC/SNCG (SNC Group) to display in-context highlightedspectral section highlights SNC and SNCG.

c. Historical measurements for SD and NMC power are accessible for anyspecific frequency point selected from within the main current spectralanalysis graph to drill into the history of a particular frequency ofinterest.

d. A details panel that contains flex-grid related information about theselected part of the spectrum. If nothing is selected, it shows summarydata about the spectrum.

The Spectral Allocation Graph displays the full spectral allocation foreach photonic link in a selected path. The spectral allocation graph caninclude the following features:

a. Spectral allocation graph that displays blocks of spectrum that areallocated (used, available, planned) between/across network elements fora given photonic link. Y-axis: tracks spectrum frequency, X-axis: tracksthe OMS spans between network elements along the path.

b. Selected SNC/SNCG: In-context highlighted spectral section for thephotonic service object. Visually differentiate between SNC and SNCG.

c. Add-drop indicators to indicate wherever the spectrum isadded/dropped at either end of a block of spectrum.

d. Regenerator indicators to indicate wherever the spectrum isregenerated (optical-to-electrical-to-optical conversion) in an end toend photonic service that spans electrical regens upon selection of apart of the spectrum.

e. A horizontal visual scrollbar provides an end-to-end card view of theactive photonic path (in miniature) that is incorporated into thehorizontal scroll bar to anchor the spectral allocation for each OpticalMultiplex Section (OMS) span.

f. A details panel split into two tabs to show a hierarchical listing ofthe SNCGs along the same path and a detailed spectral allocation for thepart of the spectrum in focus.

The power readings graph improves upon previous approaches by a.integrating into a single view multiple power readings across a path forboth photonic directions simultaneously, b. visualizing the currentreadings as well as the last day's minimum and maximum readings to helpidentify if transient power drops were encountered within the day whichmay be picked up by network operators, and c. integrating access tohistorical readings for a specific point of the path that is of interestfrom the context of the graph. For certainty, the time period relevantfor transient monitoring can be different than one day.

The spectral analysis graph can be offered as a software solutionremotely accessible via a networkwide NMS solution, offers anetwork-level view that remotely gathers and displays data from each endof an optical link to portray all this information to the user at oncefor comparison purposes, and combines performance data across thespectrum with used, available, planned allocation overlays.

The spectral allocation graph retrieves and displays spectral allocationfrom a real managed network, which allows it to be used during real-timeprovisioning and online service planning (service reservation). Uponselection of a specific section of the spectrum, regeneration siteswithin a longer photonic service path are highlighted (and they maychange spectral use).

These optical sub-views and visualizations address requirements ofservice providers who need to understand the power readings along thepath of a photonic service; perform a spectral analysis of a photoniclink; and/or view the spectral allocation of a photonic link. Theseoptical sub-views and visualizations better equip operators to manageoptical networks, especially new flexible grid networks with respect totroubleshooting, diagnostics, re-routing, service assurance, servicemaintenance, etc.

Multi-Layer Network

FIG. 1 is a network diagram of a network 100 with five interconnectedsites 110 a, 110 b, 110 c, 110 d, 110 e. The sites 110 areinterconnected by a plurality of links 120. Each of the sites 110 caninclude a switch 122 and one or more WDM network elements 124. Theswitch 122 is configured to provide services at Layers 1 (e.g., OpticalTransport Network (OTN)) and/or Layer 2 (e.g., Ethernet, MPLS) and/orLayer 3 (e.g., IP) where the switch would normally be called a router.For simplicity of disclosure herein, it will be referred to as a switchin all cases. The WDM network elements 124 provide the photonic layer(e.g., Layer 0) and various functionality associated therewith (e.g.,multiplexing, amplification, optical routing, wavelengthconversion/regeneration, local add/drop, etc.) including photoniccontrol. Of note, while shown separately, those of skill in the art willrecognize that the switch 122 and the WDM network elements 124 may berealized in the same network element. The photonic layer and thephotonic control operating thereon can also include intermediateamplifiers and/or regenerators on the links 120 which are omitted forillustration purposes. The network 100 is illustrated, for example, asan interconnected mesh network, and those of skill in the art willrecognize the network 100 can include other architectures, withadditional sites 110 or with fewer nodes sites, with additional networkelements and hardware, etc.

The sites 110 communicate with one another optically over the links 120.The sites 110 can be network elements which include a plurality ofingress and egress ports forming the links 120. Further, the nodes 110can include various degrees, i.e. the site 110 c is a one-degree node,the sites 110 a, 110 d are two-degree nodes, the site 110 e is athree-degree node, and the site 110 b is a four-degree node. The numberof degrees is indicative of the number of adjacent nodes at eachparticular node. The network 100 includes a control plane 140 operatingon and/or between the switches 122 at the sites 110 a, 110 b, 110 c, 110d, 110 e. The control plane 140 includes software, processes,algorithms, etc. that control configurable features of the network 100,such as automating discovery of the switches 122, capacity of the links120, port availability on the switches 122, connectivity between ports;dissemination of topology and bandwidth information between the switches122; calculation and creation of paths for connections; network levelprotection and restoration; and the like. In an embodiment, the controlplane 140 can utilize Automatically Switched Optical Network (ASON),Generalized Multiprotocol Label Switching (GMPLS), Optical Signal andRouting Protocol (OSRP) (from Ciena Corporation), or the like. Those ofordinary skill in the art will recognize the optical network 100 and thecontrol plane 140 can utilize any type of control plane for controllingthe switches 122 and establishing connections.

The optical network 100 can include photonic control 150 which can beviewed as a control plane and/or control algorithm/loop for managingwavelengths from a physical perspective at Layer 0. In one aspect, thephotonic control 150 is configured to add/remove wavelengths from thelinks in a controlled manner to minimize impacts to existing, in-servicewavelengths. For example, the photonic control 150 can adjust modemlaunch powers, optical amplifier gain, Variable Optical Attenuator (VOA)settings, Wavelength Selective Switch (WSS) parameters, etc. Thephotonic control 150 can also be adapted to perform network optimizationon the links 120. This optimization can also include re-optimizationwhere appropriate. In an embodiment, the photonic control 150 can adjustthe modulation format, baud rate, frequency, wavelength, spectral width,etc. of the dynamic optical transceivers in addition to theaforementioned components at the photonic layer. In an embodiment, thephotonic control 150 can include support for capacity mining where thephysical parameters are adjusted to provide increased capacity withoutrequiring additional hardware. That is, the capacity mining supports anincrease in capacity based on software and/or firmware provisioning ofexisting hardware, such as to change modulation format, baud rate,spectral occupancy, etc. This capacity mining can be based on networkoperating parameters, i.e., how much margin is available. For both thecontrol plane 140 and the photonic control 150, associated controllerscan be either centralized, distributed, or embedded in the networkelements.

The optical network 100 can also include a Software Defined Networking(SDN) controller 160. SDN allows management of network services throughabstraction of lower level functionality. This is done by decoupling thesystem that makes decisions about where traffic is sent (SDN controlthrough the SDN controller 160) from the underlying systems that forwardtraffic to the selected destination (i.e., the physical equipment in theoptical network 100). Work on SDN calls for the ability to centrallyprogram provisioning of forwarding on the optical network 100 in orderfor more flexible and precise control over network resources to supportnew services. The SDN controller 160 is a processing device that has aglobal view of the optical network 100. Additionally, the SDN controller160 can include or connect to SDN applications which can utilize thedata from the SDN controller 160 for various purposes.

There are various techniques for data communications between theswitches 122, the WDM network elements 124, the control plane 140, thephotonic control 150, and the SDN controller 160 for OAM&P purposes.These various techniques can include one or more of Optical ServiceChannels (OSCs), overhead communication channels, in-band communicationchannels, and out-of-band communication channels. OSCs are dedicatedwavelengths between WDM network elements 124. The overhead communicationchannels can be based on SONET, SDH, or OTN overhead, namely the DataCommunication Channel (DCC) or General Communication Channel (GCC). Thein-band communications channels and the out-of-band communicationchannels can use various protocols. Collectively, these techniques foran OAM&P communications network over in the network 100. The OAM&Pcommunications network may employ switching and/or routing protocols toprovide resilient communications to all network elements 122, 124 in theevent of a failure (e.g. fiber cut or equipment failure).

In an embodiment, the switches 122 and/or network elements 124 areconfigured to communicate with one another in the network 100 to operatethe control plane for control plane signaling. This communication may beeither in-band or out-of-band. For SONET networks and similarly for SDHnetworks, the switches 122 and/or network elements 124 may use standardor extended SONET line (or section) overhead for in-band signaling, suchas the Data Communications Channels (DCC). Out-of-band signaling may usean overlaid Internet Protocol (IP) network such as, for example, UserDatagram Protocol (UDP) over IP. In an embodiment, the switches 122and/or network elements 124 can include an in-band signaling mechanismutilizing OTN overhead. The General Communication Channels (GCC) definedby ITU-T Recommendation G.709 are in-band side channels used to carrytransmission management and signaling information within OpticalTransport Network elements.

FIG. 2 is a network diagram of another optical network illustratingadditional details of the control plane 140, the photonic control 150,and the SDN controller 160. The example of FIG. 2 illustrates a switch122 that connects to a WDM network element 124 which connects to anotherWDM network element 124 via a ROADM-to-ROADM section 180. The opticalsection 180 represents a portion of the network 100 between spectrumadd/drop points, e.g., ROADMs. The photonic control 150 can be anin-skin (integrated into a network element) controller which operateswith the SDN controller 160.

Again, increasing demand for data bandwidth is challenging networkoperators to find new ways to monetize their network infrastructure.Previous work has focused on the ultimate capacity of networks in astatic manner, driving the uncertainty out of the calculation of linkbudgets and therefore increasing the allowable capacity. Continuouscapacity maximization promised to deliver more than these static methodsbut also drives the need for network reconfiguration. The SDN controller160, with multi-layer coordination, is employed to solve this problem.This type of SDN controller 160 is different from those employed in puredigital networks like those at Layer 2, in that the Layer 0 SDNcontroller plays a part in margin determination and adjustment.

FIG. 2 illustrates a control environment which was used in a field trialand which is applicable to the methods and systems herein. An in-skincontroller (associated with a network element) retrieves the per-channelpower measurements, Pi, of channels transiting a ROADM to ROADM section(a section is all-optical). These per channel measurements are used toestimate the incremental Optical Signal-to-Noise Ratio (OSNR) for eachchannel, OSNRi. The in-skin controller then attempts to equalize theOSNR of each channel to that of the average of all channels.

The function of margin adjustment in capacity mining is provided byadjusting a per-channel OSNR bias, BIASi, which allows the SDNcontroller 160 to adjust individual channels up or down in power. Thisper-channel bias can also be used to fine-tune the system for thecurrent operating conditions. For instance, in the absence of full-fillone can choose to separate wavelengths in the band thereby reducing theeffect of Cross Phase Modulation (XPM). This results in a higher optimallaunch power for the channel which can be achieved by adjusting the biasfor that channel. The net result is that one can optimize the SNR of thecurrent set of channels with the aim to deliver additional capacity pertransponder/modem. This is the function of the Capacity Optimizer in theSDN controller 160 which ultimately controls the modulation format andtherefore the capacity of the modems connected to the line system. Thetransponders can be optical modems which have flexible modulationformats.

Server

FIG. 3 is a block diagram of a server 200 which may be used to implementa management system, the SDN controller 160, etc. In the systems andmethods described herein, the server 200 can be used to present a UserInterface (UI) or Graphical UI (GUI) to an operator for accomplishingthe various processes described herein. The server 200 may be a digitalcomputer that, in terms of hardware architecture, generally includes aprocessor 202, input/output (I/O) interfaces 204, a network interface206, a data store 208, and memory 210. It should be appreciated by thoseof ordinary skill in the art that FIG. 3 depicts the server 200 in anoversimplified manner, and practical embodiments may include additionalcomponents and suitably configured processing logic to support known orconventional operating features that are not described in detail herein.The components (202, 204, 206, 208, and 210) are communicatively coupledvia a local interface 212. The local interface 212 may be, for example,but not limited to, one or more buses or other wired or wirelessconnections, as is known in the art. The local interface 212 may haveadditional elements, which are omitted for simplicity, such ascontrollers, buffers (caches), drivers, repeaters, and receivers, amongmany others, to enable communications. Further, the local interface 212may include address, control, and/or data connections to enableappropriate communications among the aforementioned components.

The processor 202 is a hardware device for executing softwareinstructions. The processor 202 may be any custom made or commerciallyavailable processor, a central processing unit (CPU), an auxiliaryprocessor among several processors associated with the server 200, asemiconductor-based microprocessor (in the form of a microchip or chipset), or generally any device for executing software instructions. Whenthe server 200 is in operation, the processor 202 is configured toexecute software stored within the memory 210, to communicate data toand from the memory 210, and to generally control operations of theserver 200 pursuant to the software instructions. The I/O interfaces 204may be used to receive user input from and/or for providing systemoutput to one or more devices or components. User input may be providedvia, for example, a keyboard, touchpad, and/or a mouse. The systemoutput may be provided via a display device and a printer (not shown).I/O interfaces 204 may include, for example, a serial port, a parallelport, a small computer system interface (SCSI), a serial ATA (SATA), afibre channel, Infiniband, iSCSI, a PCI Express interface (PCI-x), aninfrared (IR) interface, a radio frequency (RF) interface, and/or auniversal serial bus (USB) interface.

The network interface 206 may be used to enable the server 200 tocommunicate over a network, such as the Internet, a wide area network(WAN), a local area network (LAN), and the like, etc. The networkinterface 206 may include, for example, an Ethernet card or adapter(e.g., 10 BaseT, Fast Ethernet, Gigabit Ethernet, 10 GbE) or a wirelesslocal area network (WLAN) card or adapter (e.g., 802.11a/b/g/n/ac). Thenetwork interface 206 may include address, control, and/or dataconnections to enable appropriate communications on the network. A datastore 208 may be used to store data. The data store 208 may include anyof volatile memory elements (e.g., random access memory (RAM, such asDRAM, SRAM, SDRAM, and the like)), nonvolatile memory elements (e.g.,ROM, hard drive, tape, CDROM, and the like), and combinations thereof.Moreover, the data store 208 may incorporate electronic, magnetic,optical, and/or other types of storage media. In one example, the datastore 208 may be located internal to the server 200 such as, forexample, an internal hard drive connected to the local interface 212 inthe server 200. Additionally, in another embodiment, the data store 208may be located external to the server 200 such as, for example, anexternal hard drive connected to the I/O interfaces 204 (e.g., SCSI orUSB connection). In a further embodiment, the data store 208 may beconnected to the server 200 through a network, such as, for example, anetwork attached file server.

The memory 210 may include any of volatile memory elements (e.g., randomaccess memory (RAM, such as DRAM, SRAM, SDRAM, etc.)), nonvolatilememory elements (e.g., ROM, hard drive, tape, CDROM, etc.), andcombinations thereof. Moreover, the memory 210 may incorporateelectronic, magnetic, optical, and/or other types of storage media. Notethat the memory 210 may have a distributed architecture, where variouscomponents are situated remotely from one another but can be accessed bythe processor 202. The software in memory 210 may include one or moresoftware programs, each of which includes an ordered listing ofexecutable instructions for implementing logical functions. The softwarein the memory 210 includes a suitable operating system (O/S) 214 and oneor more programs 216. The operating system 214 essentially controls theexecution of other computer programs, such as the one or more programs216, and provides scheduling, input-output control, file and datamanagement, memory management, and communication control and relatedservices. The one or more programs 216 may be configured to implementthe various processes, algorithms, methods, techniques, etc. describedherein.

The server 200 can be connected to the OAM&P communication network inthe network 100, such as via the network interface 206. This connectionprovides a conduit through which the hardware in the network 100 can beprogrammed following instructions from the SDN controller 160, thecontrol plane 140, and/or the photonic control 150.

It will be appreciated that some embodiments described herein mayinclude one or more generic or specialized processors (“one or moreprocessors”) such as microprocessors; Central Processing Units (CPUs);Digital Signal Processors (DSPs): customized processors such as NetworkProcessors (NPs) or Network Processing Units (NPUs), Graphics ProcessingUnits (GPUs), or the like; Field Programmable Gate Arrays (FPGAs); andthe like along with unique stored program instructions (including bothsoftware and firmware) for control thereof to implement, in conjunctionwith certain non-processor circuits, some, most, or all of the functionsof the methods and/or systems described herein. Alternatively, some orall functions may be implemented by a state machine that has no storedprogram instructions, or in one or more Application Specific IntegratedCircuits (ASICs), in which each function or some combinations of certainof the functions are implemented as custom logic or circuitry. Ofcourse, a combination of the aforementioned approaches may be used. Forsome of the embodiments described herein, a corresponding device inhardware and optionally with software, firmware, and a combinationthereof can be referred to as “circuitry configured or adapted to,”“logic configured or adapted to,” etc. perform a set of operations,steps, methods, processes, algorithms, functions, techniques, etc. ondigital and/or analog signals as described herein for the variousembodiments.

Moreover, some embodiments may include a non-transitorycomputer-readable storage medium having computer readable code storedthereon for programming a computer, server, appliance, device,processor, circuit, etc. each of which may include a processor toperform functions as described and claimed herein. Examples of suchcomputer-readable storage mediums include, but are not limited to, ahard disk, an optical storage device, a magnetic storage device, a ROM(Read Only Memory), a PROM (Programmable Read Only Memory), an EPROM(Erasable Programmable Read Only Memory), an EEPROM (ElectricallyErasable Programmable Read Only Memory), Flash memory, and the like.When stored in the non-transitory computer-readable medium, software caninclude instructions executable by a processor or device (e.g., any typeof programmable circuitry or logic) that, in response to such execution,cause a processor or the device to perform a set of operations, steps,methods, processes, algorithms, functions, techniques, etc. as describedherein for the various embodiments.

Subway Map and Correlated Objects View

The following FIGS. illustrate examples of the GUIs associated with thesubway map and correlated objects view to provide methods, systems, anda GUI for the visual topology of an end-to-end service instance across amulti-layer network along with embedded access to correlated objects anddata.

FIG. 4 is a screenshot of the subway map and line service view 400. Thesubway map and line service view 400 includes an object details view402, a network map 404 for a nodal view, a subway map 406 for a cardview, a visual scrollbar 408, and a selected object summary pod 410. Thenetwork map 404 provides a nodal, network view from where the objectdetails view 402 can be selected of a service instance, e.g., “10GHoth—Mustafar 2” a Direct Wavelength Access (DWA) service. Once selectedin the network map 404, the service instance is displayed in the subwaymap 406 for the card view and only nodes involved in the service areshown; inter-node distances are pseudo-physical/geographic (not precise)with no distracting physical background map. Thus, in this screenshot, auser can see the network view in the network map 404 and the carddetails in the subway map 406.

The visual scrollbar 408 displays the entire end-to-end service inminiature to fit along scroll bar in a card detail view with the portionexplicitly detailed in the subway map 406 highlighted. A user can changethe highlight in the visual scrollbar 408 to change the display of thesubway map 406. The selected object summary pod 410 is a pop-up windowwhich displays details of a selected object in the subway map 408, e.g.,a network element at a site labeled Tatooine.

FIG. 5 is a screenshot of the correlated objects and data items. FIG. 5is the same screenshot as FIG. 4 highlighting related objects andcorrelated data 420 of the currently selected object, namely the 10GHoth—Mustafar 2 service. This selected object has (8) alarms and (35)services associated with it.

FIG. 6 is another screenshot of the subway map and line service view.FIG. 6 illustrates another variation of the subway map and line serviceview 400. In FIG. 6, the subway map and line service view 400 includesthe network map 404, the subway map 406, and other details 450. Again, auser can select a service in the network map 404 for a correspondingcard level display in the subway map 406. The other details 450 caninclude alarms, statistics, history, notes, related services, etc.

FIG. 7 is yet another screenshot of the subway map and line serviceview. FIG. 7 illustrates a display related to a protection link 460 anda troubled link 462. A down link 464 based on the troubled link 462 isshown in the subway map 406.

FIG. 8 is yet another screenshot of the subway map and line serviceview. FIG. 8 illustrates additional details of the selected objectsummary pod 410 in addition to the network map 404 and the subway map406. The selected object summary pod 410 provides details related totests, statistics, history, services, etc. for the selected object.

FIG. 9 is yet another screenshot of the subway map and line serviceview. FIG. 9 illustrates additional details of the selected objectsummary pod 410. The selected object summary pod 410 includes buttons toreboot, resync, and bring up additional details of a selected object.The details button opens up the details view of the selected object, inthis example it would be the NE details view.

FIG. 10 is yet another screenshot of the subway map and line serviceview. FIG. 10 illustrates a simplified network with just two nodes.

FIG. 11 is a logical diagram of a navigation model for correlatedobjects and data items. Specifically, the navigation model can belogically viewed as a multi-faceted cube view into a database ofservices, resources, and network entities scoped to a user ID. Again,the network 100 is a multi-layered network and a service can haveresources at the different layers (wavelengths, Ethernet VirtualCircuits (EVCs), etc.). The various objects for a service are correlatedbetween services/constructs, resources, and troubles/events.

FIG. 12 is a diagram of a proposed navigation model of major functionalareas of the correlated objects and data items. FIG. 12 expands on thenavigation model in FIG. 11 illustrating relationships between theresources, service, and troubles dimensions.

FIG. 13 is a screenshot of correlated objects and data items. Again, thedetails 450 enable visualization of the alarms, statistics, history,notes, related services, etc. of a selected object in the network map404.

FIG. 14 is another screenshot of the correlated objects and data items.Here, the details 450 can be below the subway map 406 as a singlescrollable page.

FIG. 15 is a screenshot of the correlated objects and data items withthe subway map and line service view. Here, the selected object summarypod 410 can display various related and correlated details 470 such asservices, performance, alarms, events, etc.

FIG. 16 is yet another screenshot of the correlated objects and dataitems. Specifically, FIG. 16 illustrates object details 480 of theobjects and correlated data 420. In this example, the object details 480are for an optical service (ODU2) between two endpoints with behavior(e.g., mesh restoration, etc.) and routing constraints.

FIG. 17 is yet another screenshot of the correlated objects and dataitems. FIG. 17 illustrates a tab 482 of attributes for a service. Theobjects and correlated data 420 can be available in the GUI as tabsalong with counts.

FIG. 18 is yet another screenshot of the correlated objects and dataitems. FIG. 18 is a tab 484 of a bandwidth profile. The objects andcorrelated data 420 can also be accessed by buttons that run down theright side of the GUI.

FIG. 19 is yet another screenshot of the correlated objects and dataitems. FIG. 19 is a tab 486 of attributes.

FIG. 20 is a screenshot of a combination of the subway map and lineservices 400 view with the correlated objects and data 420 items. TheGUI can include tabs for topology (which is shown in FIG. 20), settings,notes, performance, alarms, and services. The tabs can also includecounts, such as for alarms (8 in this example) and services (35 in thisexample). In this example of FIG. 20, the 10G Hoth—Mustafar 2 service isselected. This service can include a 10 GbE with a line OpticalProtection Switch (OPS) which is “troubled” in the sense that the OPSswitch 1 is down.

The network map 404 includes a visual representation of the network 100from the perspective of the sites 110 or the network elements 122, 124and the links 120 interconnecting the sites 110 or the network elements122, 124. The network map 404 can include visualizations on the links120 such as color coding, dashing, etc. to represent different states,to represent selected services, etc. The sites 110 or the networkelements 122, 124 can be represented as icons which also can includecolor coding, dashing, etc. to represent different states, to representselected services. The icons for the sites 110 or the network elements122, 124 can also include data presented therein to represent alarms orthe like. The network map 404 can display all sites 110, networkelements 122, 124, and links 120 involved in the service.

The subway view 406 displays lower granularity from the network view404. Specifically, the network view 404 treats each site as a singleicon whereas the subway view 406 displays a device, module, or cardlevel detail for each physical component the service traverses. Sincethis is more detail, the visual scrollbar 408 is used to scroll thesubway view 406.

In this example, the subway view 406 displays three sites 110 while theservice traverses five sites 110. The subway view 406 gives a user adetailed view of each physical device associated with the service. Inthis example, the site Mustafar has a multiplexer (MUX), an opticaltransceiver (OCLD), an Optical Protection Switch (OPS), a ChannelMultiplexer/Demultiplexer (CMD), a Wavelength Selective Switch (WSS),and an amplifier (MLA), an attenuator, a dispersion compensation module,a C/L band coupler, a Time Division Multiplexing (TDM) switch (e.g.,Optical Transport Network (OTN)), and a packet switch (e.g., Ethernet).The sites Dagobah and Tatooine are amplifier/pass-through sites whichinclude amplifiers (MLA, MLA2) and WSSs.

The subway view 406 lets the user visualize the service at much bettergranularity than the network map 404 (and conventional GUI displays).The user can click/select any device and pull up details, the relatedobjects and correlated data 420, etc.

In an embodiment, a network management system includes a networkinterface communicatively coupled to one or more network elements in anetwork for exchanging Operations, Administration, Maintenance, andProvisioning (OAM&P) data; a processor communicatively coupled to thenetwork interface; and memory storing instructions that, when executed,cause the processor to obtain the OAM&P data from the network, provide aGraphical User Interface (GUI) based on the network from the OAM&P data,wherein the GUI includes a network map which provides a topological viewand a subway view which provides a detailed device-level view which ismore granular than the network map and illustrates individual componentsat each site, receive a selection from a user of a service in thenetwork, and update the GUI to highlight the service in the network mapand illustrate the associated sites in the subway view.

The service can traverse a plurality of sites in the network such thatall of the sites cannot be displayed in the subway view, wherein the GUIfurther includes a visual scrollbar which visualizes the service in aminiature format for the subway view with a portion shown in the subwayview highlighted, and wherein the memory storing instructions that, whenexecuted, further cause the processor to update the subway view based oninput from the user through the visual scrollbar. The memory storinginstructions that, when executed, can further cause the processor tohighlight a portion of the network in the topological view which iscurrently displayed in the subway view. The individual components in thesubway view can include any of a multiplexer, optical transceiver,optical switch, multiplexer, demultiplexer, Wavelength Selective Switch(WSS), and amplifier. The memory storing instructions that, whenexecuted, can further cause the processor to receive an input from theuser from a selection in the GUI, and present correlated objects anddata items based on the selection.

In another embodiment, a network management method includes, in a serverincluding a network interface communicatively coupled to one or morenetwork elements in a network for exchanging Operations, Administration,Maintenance, and Provisioning (OAM&P) data, obtaining the OAM&P datafrom the network; providing a Graphical User Interface (GUI) based onthe network from the OAM&P data, wherein the GUI includes a network mapwhich provides a topological view and a subway view which provides adetailed device-level view which is more granular than the network mapand illustrates individual components at each site; receiving aselection from a user of a service in the network; and updating the GUIto highlight the service in the network map and illustrate theassociated sites in the subway view.

Power Readings Graph, Spectral Analysis Graph, and Spectral AllocationGraph

The following FIGS. illustrate examples of the GUIs associated with thepower readings graph, spectral analysis graph, and spectral allocationgraph. Note, the power readings graph, spectral analysis graph, andspectral allocation graph can be combined with the subway view 406.

FIG. 21 is a screenshot of an optical power readings graph 500. In theGUI, the optical power readings graph 500 is illustrated in place of thenetwork map 404 when a user selects the power graph tab. Further, theGUI can also include the visual scrollbar 408 which operates asdiscussed above. The optical power readings graph 500 is a graph ofpower measurements in both directions independent for a currentlyselected power type. The power type can be total power, per channelpower, or OSC power. The optical power readings graph 500 is presentedas a graph of power (in dBm) versus components in the subway view 406.That is, the x-axis of the optical power readings graph 500 of thedevices in the path. As is seen, the optical power readings graph 500provides a visualization of the selected power type across the subwayview 406. Further, scrolling the visual scrollbar 408 scrolls theoptical power readings graph 500.

Also, a data panel 502 can display selected data related to a selectionin the optical power readings graph 500 (in this example, an amplifierin the middle). If nothing is selected, the data panel 502 can listdetected anomalies in the graph.

FIG. 22 is a screenshot of an optical spectral analysis graph 520. Theoptical spectral analysis graph 520 provides a power per frequency linegraph with overlaid blocks indicating used/planned spectrum and alsoshows per channel power. Both photonic directions are graphed. Theoptical spectral analysis graph 520 has power (dBm) on the y-axis andoptical spectrum (e.g., C-Band, 1530 to 1565 nm) on the x-axis. Theoptical spectral analysis graph 520 presents the spectrum at a specificselected point.

FIG. 23 is a screenshot of an optical spectral allocation graph 530. Theoptical spectral allocation graph 530 illustrates blocks of spectrumthat are allocated (used or planned) between/across network elements.Here, the y-axis is spectrum in frequency and the x-axis is OpticalMultiplex Section (OMS) spans between network elements. The opticalspectral allocation graph 530 can also utilize the subway view 406.

FIG. 24 is a screenshot of an optical power view 540 which is similar tothe optical power readings graph 500. FIG. 25 is a screenshot showingadditional details of the optical power view in FIG. 24.

FIG. 26 is a screenshot of the optical power readings graph 500. Theoptical power readings graph 500 is a view of an object details page fora photonic service. The User Experience (UX)/User Interface (UI)components of the optical power readings graph 500 include the followingin FIG. 26:

-   -   1. Optical power graph: Graph of power measurements in each        direction independently for the currently selected power type.    -   2. Disclosure (details) tab: contains overlays that users can        turn on/off and view the graphs.    -   3. Power type selector: controls whether “Total power,” “Per        channel power,” or “OSC power” is shown in the graph.    -   4. X-axis: View of the cards in the path, mapping to the data        points in the graphs above.    -   5. Visual Scroll Bar: portrays the entire path and a way to        scroll through it.    -   6. Data panel: Displays the specific data related to a selection        in the graph. When nothing is selected, displays the list of all        anomalies detected in the graph (i.e. pins).    -   7. Historical link per data-point: progressive disclosure of        historical data for a data point.    -   8. Selected card actions: useful to directly invoke actions        and/or navigate to related information on the selected card.

FIG. 27 is another screenshot of the optical power readings graph 500.The optical power readings graph 500 is a view of an object details pagefor a photonic service. The User Experience (UX)/User Interface (UI)components of the optical power readings graph include the following inFIG. 27:

-   -   1. Optical power graph: Graph of power measurements in each        direction independently for the currently selected power type.    -   2. Disclosure (details) tab: contains overlays that users can        turn on/off and view the graphs.    -   3. Power type selector: controls whether “Total power,” “Per        channel power,” or “OSC power” is shown in the graph.    -   4. X-axis: View of the cards in the path, mapping to the data        points in the graphs above.    -   5. Visual Scroll Bar: portrays the entire path and a way to        scroll through it.    -   6. Data panel: Displays the specific data related to a selection        in the graph. When nothing is selected, displays the list of all        anomalies detected in the graph (i.e. pins).    -   7. Historical link per data-point: progressive disclosure of        historical data for a data point.    -   8. Selected card actions: useful to directly invoke actions        and/or navigate to related information on the selected card.

FIG. 28 is yet another screenshot of the optical power readings graph500. The optical power readings graph 500 is a view in an object detailspage for a photonic service. The User Experience (UX)/User Interface(UI) components of the optical power readings graph 500 include thefollowing in FIG. 28:

-   -   1. Optical power graph: Graph of power measurements in each        direction independently for the currently selected power type.    -   2. Disclosure (details) tab: contains overlays that users can        turn on/off and view on the graphs (not shown in FIG. 28).    -   3. Power type selector: controls whether “Total power,” “Per        channel power,” or “OSC power” is shown in the graph.    -   4. X-axis: View of the cards in the path, mapping to the data        points in the graphs above.    -   5. Visual Scroll Bar: portrays the entire path and a way to        scroll through it.    -   6. Data panel: Displays the specific data related to a selection        in the graph. When nothing is selected, displays the list of all        anomalies detected in the graph (i.e. pins).    -   7. Historical link per data-point: progressive disclosure of        historical data for a data point (not shown in FIG. 28)    -   8. Selected card actions: useful to directly invoke actions        and/or navigate to related information on the selected card (not        shown in FIG. 28).

FIG. 29 is yet another screenshot of the optical power readings graph500. The optical power readings graph 500 is a view in an object detailspage for a photonic service. The User Experience (UX)/User Interface(UI) components of the optical power readings graph 500 include thefollowing in FIG. 29:

-   -   1. Optical power graph: Graph of power measurements in each        direction independently for the currently selected power type.    -   2. Disclosure (details) tab: contains overlays that users can        turn on/off and view the graphs.    -   3. Power type selector: controls whether “Total power,” “Per        channel power,” or “OSC power” is shown in the graph.    -   4. X-axis: View of the cards in the path, mapping to the data        points in the graphs above.    -   5. Visual Scroll Bar: portrays the entire path and a way to        scroll through it.    -   6. Data panel: Displays the specific data related to a selection        in the graph. When nothing is selected, displays the list of all        anomalies detected in the graph (i.e. pins).    -   7. Historical link per data-point: progressive disclosure of        historical data for a data point (not shown in FIG. 29)    -   8. Selected card actions: useful to directly invoke actions        and/or navigate to related information on the selected card (not        shown in FIG. 29).

FIGS. 30-32 are example screenshots of the optical power readings graph500.

FIG. 33 is a screenshot of the optical power readings graph 500 with thesubway map view 406.

FIG. 34 is a screenshot of an optical spectral analysis graph 520. Thespectral analysis graph 520 is a view in an object details page for aphotonic service. The User Experience (UX)/User Interface (UI)components of the spectral analysis graph include the following in FIG.34:

-   -   1. Spectral analysis graphs: Power per frequency line graph with        overlaid blocks indicating used/planned spectrum. Also, shows        per channel power. One graph per photonic direction.    -   2. Selected SNC/SNCG (if selected): In-context highlighted        spectral section highlights SNC and SNCG.    -   3. Disclosure (details) tab: allows for overlays to be        hidden/shown on the allocation view.    -   4. Details panel: contains flex-grid related information about        the selected part of the spectrum. Similar content and treatment        as in the path-based spectral allocation. If nothing is        selected, shows summary data about the spectrum.    -   5. Historical PM button: Opens a lightbox showing time-series        graph for this data-point (not shown in FIG. 34).

FIG. 35 is another screenshot of an optical spectral analysis graph 520.The spectral analysis graph 520 is a view in an object details page fora photonic service. The User Experience (UX)/User Interface (UI)components of the spectral analysis graph include the following in FIG.35:

-   -   1. Spectral analysis graphs: Power per frequency line graph with        overlaid blocks indicating used/planned spectrum. Also, shows        per channel power. One graph per photonic direction.    -   2. Selected SNC/SNCG (if selected): In-context highlighted        spectral section highlights SNC and SNCG.    -   3. Disclosure (details) tab: allows for overlays to be        hidden/shown on the allocation view.    -   4. Details panel: contains all flex-grid related information        about the selected part of the spectrum. Similar content and        treatment as in the path-based spectral allocation. If nothing        is selected, shows summary data about the spectrum.    -   5. Historical PM button: Opens a lightbox showing time-series        graph for this data-point (not shown in FIG. 35).

FIG. 36 is yet another screenshot of an optical spectral analysis graph520. The spectral analysis graph 520 is a view in an object details pagefor a photonic service. The User Experience (UX)/User Interface (UI)components of the spectral analysis graph include the following in FIG.36:

-   -   1. Spectral analysis graphs: Power per frequency line graph with        overlaid blocks indicating used/planned spectrum. Also, shows        per channel power. One graph per photonic direction.    -   2. Selected SNC/SNCG (if selected): In-context highlighted        spectral section highlights SNC and SNCG.    -   3. Disclosure (details) tab: allows for overlays to be        hidden/shown on the allocation view.    -   4. Details panel: contains all flex-grid related information        about the selected part of the spectrum. Similar content and        treatment as in the path-based spectral allocation. If nothing        is selected, shows summary data about the spectrum.    -   5. Historical PM button: Opens a lightbox showing time-series        graph for this data-point (not shown in FIG. 36).

FIG. 37 is yet another screenshot of an optical spectral analysis graph.The spectral analysis graph is a view in an object details page for aphotonic service. The User Experience (UX)/User Interface (UI)components of the spectral analysis graph include the following in FIG.37:

-   -   1. Spectral analysis graphs: Power per frequency line graph with        overlaid blocks indicating used/planned spectrum. Also, shows        per channel power. One graph per photonic direction.    -   2. Selected SNC/SNCG (if selected): In-context highlighted        spectral section highlights SNC and SNCG.    -   3. Disclosure (details) tab: allows for overlays to be        hidden/shown on the allocation view.    -   4. Details panel: contains all flex-grid related information        about the selected part of the spectrum. Similar content and        treatment as in the path-based spectral allocation. If nothing        is selected, shows summary data about the spectrum.    -   5. Historical PM button: Opens a lightbox showing time-series        graph for this data-point.

FIGS. 38-41 are example screenshots of the optical spectral analysisgraph.

FIG. 42 is a screenshot of an optical spectral allocation graph 530. Theoptical spectral allocation graph is a view of an object details pagefor a photonic service. The User Experience (UX)/User Interface (UI)components of the optical spectral allocation graph include thefollowing in FIG. 42:

-   -   1. Spectral allocation graph: blocks of spectrum that are        allocated (used, planned) between/across NEs. Y-axis: spectrum        frequency, X-axis: OMS spans between NEs along the path    -   2. Line View (X-Axis): NEs (card view) along the path.    -   3. Selected SNC/SNCG: In-context highlighted spectral section        for the photonic service object which visually differentiates        between SNC and SNCG.    -   4. Disclosure (details) tab: allows for overlays to be placed on        the allocation view.    -   5. Details panel: split into 2 tabs to show a hierarchical        listing of the SNCGs along the same path and a detailed spectral        allocation for the part of the spectrum in focus.

FIG. 43 is another screenshot of an optical spectral allocation graph.The optical spectral allocation graph is a view of an object detailspage for a photonic service. The User Experience (UX)/User Interface(UI) components of the optical spectral allocation graph include thefollowing in FIG. 43:

-   -   1. Spectral allocation graph: blocks of spectrum that are        allocated (used, planned) between/across NEs. Y-axis: spectrum        frequency, X-axis: OMS spans between NEs along the path.    -   2. Legend: indicates the meaning of the colors/patterns in the        graph.    -   3. Disclosure (details) tab: allows for overlays to be placed on        the allocation view.    -   4. Selected SNC/SNCG: In-context highlighted spectral section        for the photonic service object which visually differentiates        between SNC and SNCG.    -   5. Add-drop indicators: indicate wherever the spectrum is        added/dropped at either end of a block of spectrum.    -   6. Visual Scroll Bar: miniature, scrollable view of the active        photonic path to anchor the spectral allocation for each OMS        span.    -   7. Details panel: split into 2 tabs to show a hierarchical        listing of the SNCGs along the same path and a detailed spectral        allocation for the part of the spectrum in focus.

FIG. 44 is yet another screenshot of an optical spectral allocationgraph. The used and planned sections of the spectrum are visuallydifferentiated, and the points where spectrum is terminated are marked.The add/drop points are shown as thick vertical lines. Scroll the scrollbar for service paths that fall outside the screen. In most cases, thisis not expected to be necessary because the X-axis is scaled to fit allNEs in the path on the screen at once (in most cases). To view spectralallocation, this is a benefit so that the user can get a condensedpicture of the entire path in one view. However, very long views mayrequire scrolling, which can be accommodated showing the NEs and OMSlinks for the full path.

Select specific overlays are show in the disclosure (details) tab tohighlight/add additional details on demand. Specific overlays offeredcan depend on the context where this visualization is shown. Thismechanism allows users to control when extra data is shown so that theycan more easily interpret the information. Some example overlays maybe:Operational/troubleshooting context: service state (highlight anynon-normal SNCs sharing spectrum along the path) and other affectedneighbors. In the planning/provisioning context, Media Channel (MC)borders give a sense of spectral efficiency.

FIG. 45 is a screenshot of details of a panel associated with theoptical spectral allocation graph. The details panel shows moreinformation about the SNC/SNCG in focus. In addition to commoninformation (SNC/SNCG labels and center frequency/width), there are 2tabs (Spectral allocation and Service bundles) to display a moredetailed graphical breakdown of the in-focus SNC/SNCG (purple here) anda hierarchical list of the service bundles that extend along the fullpath. The graphical section is intended to be identical to the one shownin the spectral analysis view.

The highlighted section of the spectrum depends on the context. Forexample, during a provisioning workflow, the SNC being currentlyprovisioned will be highlighted (and its associated SNCG). The tabopened by default may change depending on the context in which thiscomponent is used. For example, during provisioning/online planning, itmay be more appropriate to first show the service bundles to allow theuser to review their choice of SNCG based on other content of that SNCG.

FIG. 46 is a screenshot of selection behavior associated with theoptical spectral allocation graph. A user can hover over the graph tovisually highlight separately selectable SNCs within the verticalspectrum. The user can click on the spectrum blocks to progressivelydisclose the detailed spectral breakdown of the selected SNC/SNCG(update right-hand panel). The user can highlight the selection in thegraph in the selection color. The user can click on the back arrow(angle bracket) to de-select.

If the selected SNC/SNCG spans one or more regens, this is indicated inthe graph between the different spectrum blocks. Note that the sectionof spectrum used may change across the regen, as shown in the followingexample. The selection panel can indicate each segment's detailedspectral breakdown separately.

FIGS. 47 and 48 are example screenshots of the optical spectralallocation graph.

FIG. 49 is a screenshot of a subway map and line service view 400 withhighlights 600 in the map to indicate what portion of a path in thenetwork map 404 is displayed in the subway view 406. Here, thehighlights 600 can be used in lieu or in combination with the visualscrollbar 408 as a mechanism to highlight what was is being shown in thesubway view 406.

Services

FIG. 50 is a diagram of example service structures. FIG. 51 is ascreenshot of selecting an end to end service path. FIG. 52 is ascreenshot of an example service. FIG. 53 is a screenshot of anotherexample service. FIG. 54 is a screenshot of another subway map and lineservice view.

With the multi-layer network 100, there is a capability of stitchingcomplex service structures into a single visualized entity and thesystems and methods provide a mechanism to represent the various pathsthat are present in an end to end service (or infrastructure). FIG. 50illustrates generic examples of service structures. The topology treedisplays all resiliency and aggregation domains within the service andeach path within these domains so that they can be separately selectedand acted upon.

FIG. 51 is a screenshot for selecting an end to end service path andincludes the following:

Endpoint selector/display: Either a read-only view of the endpoints forthe end-to-end active path or input fields for the user to select whichpath to view (in multi-endpoint service). Interaction details describedfurther on this page.

Active path selectable row (displayed with hover effect): Click this rowto select the e2e active path between endpoints (requires endpointselection in multi-endpoint services). Highlights it in the subway map,shows it in the subway line view and updates any other path-based viewsin other tabs accordingly. Show whole section under hover effect,similar to other rows within the list/tree.

Domain: Type, Name (if applicable), domain's endpoint NEs, status (ifapplicable).

Domain “More info” icon: progressively disclose attributes related tothe domain itself. Icon is only displayed if applicable.

Path: Path type, if active, Path endpoint NEs if they are different fromthe overall domain (e.g. unidirectional tunnels, multicast services),possibly other path status+secondary path description (e.g. via NExyz).Note: If next NE in the path is the end of the path, omit from thedisplay.

Nested domain: shows nested domain information associated with a givenpath (similar to how a domain is shown if not nested).

Path/domain action bar: displays associated actions for the selectedpath or domain in the tree.

FIG. 51 is a cascaded OPS example. With this component, users will beable to:

Visualize the service structure at the layer of the service only (thisconstruct is NOT intended to be used for multi-layer navigation).

Visualize the resilience domains in the service.

Visualize unprotected segments between NEs (e.g. tails, QinQ spurs) as adomain that has no resilient paths.

Visualize unprotected structures that are split across multiple paths(e.g. BPSK/8 QAM paths).

Visualize the hierarchy of paths in the service (nesting).

Visualize path & domain status as applicable. For example, if it is partof the active path or if protection conditions are in place such aslockout of protection.

Select individual paths to highlight them on the subway map AND updatewhat is shown in the subway line view.

Select paths to invoke path-based actions, as applicable.

Resilience domains are selectable to allow for some actions to beperformed on the domain as a whole. Selecting a domain highlights all ofits paths in the map. Display its currently active path in the subwayline view. Some actions may be performed on the selected domain basis,such as “Revert” (if currently switched).

Select the overall service's active path to go back to the defaulthighlighting in the map and line view.

FIG. 53 is an Ethernet Local Area Network (ELAN) example that spansmultiple domains including QinQ spurs (A-F, H-D, I-E), MPLS (F, B, G,C), and G.8032 ring (G,H,I).

Although the present disclosure has been illustrated and describedherein with reference to preferred embodiments and specific examplesthereof, it will be readily apparent to those of ordinary skill in theart that other embodiments and examples may perform similar functionsand/or achieve like results. All such equivalent embodiments andexamples are within the spirit and scope of the present disclosure, arecontemplated thereby, and are intended to be covered by the followingclaims.

What is claimed is:
 1. A network management system, comprising: anetwork interface communicatively coupled to one or more networkelements in a network for exchanging Operations, Administration,Maintenance, and Provisioning (OAM&P) data; a processor communicativelycoupled to the network interface; and memory storing instructions that,when executed, cause the processor to obtain the OAM&P data from thenetwork, provide a Graphical User Interface (GUI) based on the OAM&Pdata obtained from the network, wherein the GUI comprises both a networkmap which provides a topological view of a plurality of sites of thenetwork and a subway view which provides a detailed device-level viewwhich is more granular than the network map and illustrates individualcomponents at each site, receive a selection from a user of a service inthe network, and in response to receiving the selection, update the GUIto highlight one or more of the sites associated with the selectedservice in the network map and to illustrate individual components ofthe one or more sites associated with the selected service in the subwayview.
 2. The network management system of claim 1, wherein the servicetraverses a plurality of sites in the network such that all of the sitescannot be displayed in the subway view, wherein the GUI furthercomprises a visual scrollbar which visualizes the service in a miniatureformat for the subway view with a portion shown in the subway viewhighlighted, and wherein the memory storing instructions that, whenexecuted, further cause the processor to update the subway view based oninput from the user through the visual scrollbar.
 3. The networkmanagement system of claim 2, wherein the memory storing instructionsthat, when executed, further cause the processor to highlight a portionof the network in the topological view which is currently displayed inthe subway view.
 4. The network management system of claim 1, whereinthe individual components in the subway view comprise any of amultiplexer, an optical transceiver, an optical switch, a multiplexer, ademultiplexer, a Wavelength Selective Switch (WSS), an amplifier, anattenuator, a dispersion compensation module, a C/L band coupler, a TimeDivision Multiplexing (TDM) switch, and a packet switch.
 5. The networkmanagement system of claim 1, wherein the memory storing instructionsthat, when executed, further cause the processor to receive an inputfrom the user from a selection in the GUI, and present correlatedobjects and data items based on the selection.
 6. The network managementsystem of claim 1, wherein the memory storing instructions that, whenexecuted, further cause the processor to receive an input from the userselecting a power graph, and present an optical power readings graph inplace of the network map, wherein the optical power readings graphillustrates power readings in both directions along the subway view andhas an x-axis of optical power and a y-axis of each of the individualcomponents in the subway view that measure optical power.
 7. The networkmanagement system of claim 1, wherein the memory storing instructionsthat, when executed, further cause the processor to receive an inputfrom the user selecting a power graph, and present an optical powerreadings graph in place of the network map, wherein the optical powerreadings graph illustrates power readings in both directions along thesubway view and has an x-axis of optical power and a y-axis of each ofthe individual components in the subway view that measure optical power.8. The network management system of claim 1, wherein the memory storinginstructions that, when executed, further cause the processor to receivean input from the user selecting a point in the subway view for viewingan optical spectral analysis graph, and present an optical powerreadings graph in place of the network map, wherein the optical spectralanalysis graph displays power on an x-axis and spectrum on a y-axis. 9.The network management system of claim 1, wherein the memory storinginstructions that, when executed, further cause the processor to receivean input from the user selecting spectral use, and present an opticalspectral allocation graph in place of the network map, wherein theoptical spectral allocation graph displays spectrum on an x-axis andusage of the spectrum on a y-axis across the subway view.
 10. A networkmanagement method, comprising: in a server comprising a networkinterface communicatively coupled to one or more network elements in anetwork for exchanging Operations, Administration, Maintenance, andProvisioning (OAM&P) data, obtaining the OAM&P data from the network;providing a Graphical User Interface (GUI) based on the OAM&P dataobtained from the network, wherein the GUI comprises both a network mapwhich provides a topological view of a plurality of sites of the networka subway view which provides a detailed device-level view which is moregranular than the network map and illustrates individual components ateach site; receiving a selection from a user of a service in thenetwork; and in response to receiving the selection, updating the GUI tohighlight one or more of the sites associated with the selected servicein the network map and to illustrate individual components of the one ormore sites associated with the selected service in the subway view. 11.The network management method of claim 10, wherein the service traversesa plurality of sites in the network such that all of the sites cannot bedisplayed in the subway view, wherein the GUI further comprises a visualscrollbar which visualizes the service in a miniature format for thesubway view with a portion shown in the subway view highlighted, andfurther comprising: updating the subway view based on input from theuser through the visual scrollbar.
 12. The network management method ofclaim 10, wherein the individual components in the subway view compriseany of a multiplexer, an optical transceiver, an optical switch, amultiplexer, a demultiplexer, a Wavelength Selective Switch (WSS), anamplifier, an attenuator, a dispersion compensation module, a C/L bandcoupler, a Time Division Multiplexing (TDM) switch, and a packet switch.13. The network management method of claim 10, further comprising:receiving an input from the user from a selection in the GUI; andpresenting correlated objects and data items based on the selection. 14.The network management method of claim 10, further comprising: receivingan input from the user selecting a power graph, and presenting anoptical power readings graph in place of the network map, wherein theoptical power readings graph illustrates power readings in bothdirections along the subway view and has an x-axis of optical power anda y-axis of each of the individual components in the subway view thatmeasure optical power.
 15. The network management method of claim 10,further comprising: receiving an input from the user selecting a powergraph, and presenting an optical power readings graph in place of thenetwork map, wherein the optical power readings graph illustrates powerreadings in both directions along the subway view and has an x-axis ofoptical power and a y-axis of each of the individual components in thesubway view that measure optical power.
 16. The network managementmethod of claim 10, further comprising: receiving an input from the userselecting a point in the subway view for viewing an optical spectralanalysis graph, and presenting an optical power readings graph in placeof the network map, wherein the optical spectral analysis graph displayspower on an x-axis and spectrum on a y-axis.
 17. The network managementmethod of claim 10, further comprising: receiving an input from the userselecting spectral use, and presenting an optical spectral allocationgraph in place of the network map, wherein the optical spectralallocation graph displays spectrum on an x-axis and usage of thespectrum on a y-axis across the subway view.
 18. A non-transitorycomputer-readable medium comprising instructions that, when executed,cause a processor to perform steps of: obtaining Operations,Administration, Maintenance, and Provisioning (OAM&P) data from anetwork via a network interface communicatively coupled to the processorand to one or more network elements; providing a Graphical UserInterface (GUI) based on the OAM&P data obtained from the network,wherein the GUI comprises both a network map which provides atopological view of a plurality of sites of the network and a subwayview which provides a detailed device-level view which is more granularthan the network map and illustrates individual components at each site;receiving a selection from a user of a service in the network; and inresponse to receiving the selection, updating the GUI to highlight oneor more of the sites associated with the selected service in the networkmap and to illustrate indivdual components of the one ore more sitesassociated with the selected service in the subway view.
 19. Thenon-transitory computer-readable medium of claim 18, wherein the servicetraverses a plurality of sites in the network such that all of the sitescannot be displayed in the subway view, wherein the GUI furthercomprises a visual scrollbar which visualizes the service in a miniatureformat for the subway view with a portion shown in the subway viewhighlighted, and wherein the instructions that, when executed, furthercause the processor to perform steps of: updating the subway view basedon input from the user through the visual scrollbar.
 20. Thenon-transitory computer-readable medium of claim 18, wherein theindividual components in the subway view comprise any of a multiplexer,an optical transceiver, an optical switch, a multiplexer, ademultiplexer, a Wavelength Selective Switch (WSS), an amplifier, anattenuator, a dispersion compensation module, a C/L band coupler, a TimeDivision Multiplexing (TDM) switch, and a packet switch.